CN106630115A - Rapid film forming method for organic fillers in low C/N ratio wastewater treatment - Google Patents

Rapid film forming method for organic fillers in low C/N ratio wastewater treatment Download PDF

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CN106630115A
CN106630115A CN201611046007.2A CN201611046007A CN106630115A CN 106630115 A CN106630115 A CN 106630115A CN 201611046007 A CN201611046007 A CN 201611046007A CN 106630115 A CN106630115 A CN 106630115A
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wastewater treatment
film forming
low
rhamnolipid
forming method
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CN106630115B (en
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黄辉
王庆
任洪强
余静
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Nanjing University
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YIXING ENVIRONMENTAL PROTECTION RESEARCH INSTITUTE NANJING UNIVERSITY
Nanjing University
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    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/30—Aerobic and anaerobic processes
    • C02F3/301—Aerobic and anaerobic treatment in the same reactor
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/02—Aerobic processes
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/02—Aerobic processes
    • C02F3/10—Packings; Fillings; Grids
    • C02F3/101—Arranged-type packing, e.g. stacks, arrays
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/02—Aerobic processes
    • C02F3/10—Packings; Fillings; Grids
    • C02F3/105—Characterized by the chemical composition
    • C02F3/106—Carbonaceous materials
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/02—Aerobic processes
    • C02F3/10—Packings; Fillings; Grids
    • C02F3/105—Characterized by the chemical composition
    • C02F3/107—Inorganic materials, e.g. sand, silicates
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/10—Inorganic compounds
    • C02F2101/16—Nitrogen compounds, e.g. ammonia
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/34—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32
    • C02F2103/343—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32 from the pharmaceutical industry, e.g. containing antibiotics
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/34—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32
    • C02F2103/36—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32 from the manufacture of organic compounds
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2203/00—Apparatus and plants for the biological treatment of water, waste water or sewage
    • C02F2203/004—Apparatus and plants for the biological treatment of water, waste water or sewage comprising a selector reactor for promoting floc-forming or other bacteria
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2301/00—General aspects of water treatment
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2305/00—Use of specific compounds during water treatment
    • C02F2305/06—Nutrients for stimulating the growth of microorganisms
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00—Technologies for wastewater treatment
    • Y02W10/10—Biological treatment of water, waste water, or sewage

Abstract

The invention discloses a rapid film forming method for organic fillers in low C/N ratio wastewater treatment, and belongs to the field of biofilm process wastewater treatment. In the technical scheme, the rapid film forming method comprises the following steps: (1) adding the inoculated sludge and the fillers to a reactor, aerating for 24 hours without feeding wastewater, and finally discharging all the inoculated sludge; (2) adding anionic polyacrylamide (APAM) and rhamnolipid to low C/N ratio wastewater every day; (3) intermittently inoculating a synthetic type-2 self-induced strain solution until the film formation is completed. The rapid film forming method provided by the invention increases adhesion and colonization of bacterial population induction accelerating microorganisms on the fillers by changing a micro-interface acting force of the fillers, thereby improving the film forming effect; compared with the conventional film forming method, the rapid film forming method provided by the invention is rapid to form the film, easy to operate and strong in practicality, and is a rapid film forming method suitable for organic fillers in low C/N ratio wastewater treatment under aerobic, anoxic or anaerobic conditions.

Description

A kind of fast filming methods of low C/N than organic filler in wastewater treatment
Technical field
The invention belongs to biomembrance process technical field of sewage, and in particular to a kind of low C/N is more organic than in wastewater treatment The fast filming method of filler.
Background technology
As the continuous propulsion of process of industrialization, the discharge of China's nitrogenous effluent rapidly increase, bring to environment huge Some high ammonia nitrogens of generation, low C/N have obtained the extensive concern of people than the improvement of waste water in disaster, particularly industrial production. Traditional activated sludge process is difficult qualified discharge when this kind of waste water is processed because carbon source is not enough.Biomembrance process sewage disposal is utilized After sewage in reactor is contacted with filler, the biomembrane of one layer of tool activity is formed on carrier.It is prolific on biomembrane Microbe absorption degradation, so as to play the effect of purification sewage, biomembranous tolerance is very strong, therefore biomembrance process There is very strong application prospect in low C/N is processed than waste water.It is raw at present but the speed of biomembrance process biofilm still has much room for improvement The mode of thing biofilm mainly has " vexed exposure method ", " round-robin method ", " natural membrane method " etc., the time needed for this several biofilm method biofilm It is all longer, generally require the time of 1-2 month.Chinese invention patent《Carrier filler in a kind of MBBR Colonization method》(publication number 05565480A) by carrying out draining simultaneously to MBBR and supplementing ion exchange wastewater, Dynamic cultivation, and returnedactivatedsludge are carried out, the method needs to control sludge concentration, and operation is inconvenient, and dynamic cultivation can cause Fluctuation of service.Patent《A kind of suspended packing microbial quick film forming method》(publication number 05565480A), biofilm completes needs Operation 7d-25d, the biofilm time is still longer.
On the other hand, with high molecular synthetic material industrial expansion, a large amount of organic polymer fillers are come out one after another and are obtained Must apply, become most one of biofilm packing of development prospect.The material type of conventional organic filler includes poly- terephthaldehyde Sour glycol ester (PET), Pioloform, polyvinyl acetal (PVF), polyacrylonitrile (PAN), polyamide (PA), polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), polystyrene (PS) etc..Therefore, fast short-term trainings of the low C/N than organic filler in wastewater treatment is researched and developed Film method has important practical significance so as to the startup for accelerating reactor.
The content of the invention
Present invention solves the technical problem that being to provide a kind of fast filming sides of low C/N than organic filler in wastewater treatment Method, can shorten the biofilm time, improve anti impulsion load ability and water treatment effect.
To reach above-mentioned purpose, the technical scheme that the present invention is provided is as follows：
Fast filming methods of a kind of low C/N than organic filler in wastewater treatment, it is characterised in that comprise the steps：
(1) by seed sludge and organic filler according to 1:The volume ratio of 10-15 adds reactor and vexed exposure 24h, temperature control Then system all discharges seed sludge at 50-58 DEG C；
(2) PAMA (APAM) and rhamnolipid are added in waste water, the PAMA (APAM) dosage is 1-5mg/L, and the dosage of rhamnolipid is 20-30mg/L, and dosing method is direct daily with waste water Add；
(3) strain solution of interval inoculation synthesis AI-2 signaling molecules, bacterium solution volume is 1%- with reactor volume ratio 3%, reactor brings into operation and be inoculated with after 2d-3d, inoculum density 3-5g/L, SV30 18%-30%；
(4) pH 6.0-8.0, water temperature 16-40 DEG C in control system, water inlet volumetric loading is controlled in 0.3-1.0kgCOD/ (m3.d)；
(5) treat that COD clearances reach 30%-40%, NH4+When the clearance of-N reaches 20%-30%, by the ratio of 6%-15% Example steps up influent load, and continuous service 2d-3d stops increasing influent load；
(6) continue to run with 3d-18d biofilms to complete.
It is a kind of anion biosurfactant produced by microorganism that its principle is rhamnolipid, nontoxic and can give birth to Thing is degraded, and by adding rhamnolipid the micro-interface reaction force attenuation of filler, microorganism can be made easily to realize on filler surface Initial adherence, there is certain flocculating setting to act on micro PAMA (APAM)；On the other hand, 2 types from Elicitor is to play Gram-negative and positive bacteria the signaling molecule that quorum sensing is acted on, adding by signaling molecule Enter can enhancement microbiological filler surface attachment and colonize, so as to realize fast filming.
Further, in such scheme, the organic filler described in step (1) by weight percentage, mainly by Following component is constituted：Polyethylene terephthalate (PET) 75-85%, glass powder 0.2-3%, carbon fiber 0.5- 1.5%th, volcanic ash 0.8-2.0%, slag 0.4-1.0%, porous silica 0.2-0.5%, clay 0.1-1.0%, kaolinite Native 0.5-1.0%, cob charcoal 0.6-1.0%, crushing timber 0.1-0.3%, foaming agent 0.1-0.2%, balance of polyvinyl alcohol Acetal (PVF).The foaming agent is AC foaming agents, and the carbon fiber is prepared by polyacrylonitrile fibre or acrylic fiber , the cob charcoal is obtained by the reed and calamus that are carbonized.
Further, in such scheme, the rhamnolipid described in step (2) is single rhamnolipid and double rhamnolipids Mixed structure, technical grade, concentration 25% or so.
Further, in such scheme, the bacterial strain of the synthesis AI-2 signaling molecules is Acinetobactersp.TW.
Further, in such scheme, the Acinetobacter sp.TW intervals 2d-3d is inoculated with into reactor.
Further, in such scheme, as COD and NH4 +The clearance of-N stably reaches respectively 70% and 60%, filler Surface forms khaki biomembrane, mainly based on protozoan and metazoa, that is, stops adding anion pp acyl The bacterial strain of amine (APAM), rhamnolipid and synthesis AI-2 signaling molecules, completes biofilm.
Compared with prior art, the present invention has following remarkable result：
(1) present invention accelerates micro- life by adding low concentration rhamnolipid and bacterial community induction signal molecule AI-2 Thing biological attachment and is colonized on filler, so as to improve biofilm effect.Compared with prior art, the present invention is by controlling rhamnose The dosage of fat, makes the micro-interface reaction force attenuation of filler, and microorganism easily realizes the initial adherence on filler surface, so as to Fast-growth on filler, and interval adds attachment and the colonized action of AI-2 enhancing microorganisms.Due to the generation of bacterium AI-2 Contribute to inter-species exchange and biomembranous formation, therefore improve microorganism colonization efficiency.
(2) of the invention compared with conventional colonization method, biofilm is quick, easy to operate, practical, is that one kind is applied to Methods of the low C/N than wastewater treatment organic filler fast filming under oxygen, anoxic or anaerobic condition.
Specific embodiment
To further appreciate that present disclosure, with reference to embodiment, the invention will be further described.Embodiment 1
The present embodiment is the fast filming method with regard to organic filler in high ammonia nitrogen, the process of high salinity pigment wastewater.
Waste water quality：COD concentration 1200mg/L, NH4 +- N concentration 400mg/L, salinity are 1.2%, pH value 7,20 DEG C of water temperature.
Organic filler by weight percentage, is mainly comprised the following ingredients：Polyethylene terephthalate (PET) 75%th, glass powder 0.2%, carbon fiber 0.5%, volcanic ash 0.8%, slag 0.4%, porous silica 0.2%, clay 0.1%th, kaolin 0.5%, cob charcoal 0.6%, crushing timber 0.1%, foaming agent 0.1%, balance of Pioloform, polyvinyl acetal (PVF).The foaming agent is AC foaming agents, and the carbon fiber is prepared from by polyacrylonitrile fibre, and the cob charcoal is It is obtained by the reed and calamus that are carbonized.
The preparation method of organic filler is：1) size is crushed into the sodium chloride that timber mass concentration is 0.3% for 3mm Solution soaks 1 month, takes out, drying；2) after by the glass powder, clay, kaolin uniformly mixing, in being fitted into mould, with 3 DEG C/heating rate of min is warming up to 300 DEG C, is incubated 10min；Again 800 DEG C are warming up to the heating rate of 5 DEG C/min, insulation 250min；Then 650 DEG C are cooled to the rate of temperature fall of 10 DEG C/min, finally naturally cool to normal temperature；3) by the carbon fiber, Volcanic ash, slag, porous silica, cob charcoal and step 2) process after glass powder, clay, kaolin stirring mix, Obtain premix；4) by step 3) gained premix be heated to 250 DEG C, in 80rmin-1Under continuous stirring condition, will be described poly- Ethylene glycol terephthalate, Pioloform, polyvinyl acetal are added in the premix, stir 20min, add the foaming agent, Form mixture；5) when the mixture of step 4 is cooled to 75 DEG C, add the step 1) process after crushing timber, send Enter in extruder barrel, by extrusion die extrusion molding, that is, obtain the organic filler.
Its fast filming method is：
(1) by seed sludge and organic filler according to 1:10 volume ratio adds reactor and vexed exposure 24h, temperature control to exist 50 DEG C, then seed sludge is all discharged；
(2) PAMA (APAM) and rhamnolipid are added in waste water, the PAMA (APAM) dosage is 1mg/L, and the dosage of rhamnolipid is 20mg/L, and described rhamnolipid is single rhamnolipid and double The mixed structure of rhamnolipid, technical grade, concentration 25% or so, dosing method is directly added daily with waste water；
(3) interval inoculation synthesizes the strain solution of AI-2 signaling molecules, and the bacterial strain of the synthesis AI-2 signaling molecules is Acinetobacter sp.TW, bacterium solution volume is 1% with reactor volume ratio, and the Acinetobacter sp.TW are spaced 2d It is inoculated with into reactor, reactor brings into operation and be inoculated with after 2d-3d, inoculum density 3g/L, SV30 18%%；
(4) 16 DEG C of pH 6.0, water temperature in control system, water inlet volumetric loading is controlled in 0.3kgCOD/ (m3.d)；
(5) treat COD clearances up to 30%, NH4+When the clearance of-N reaches 20%, step up into water in 6% ratio Load, continuous service 2d stops increasing influent load；
(6) when continuing to run with culture to 5d, COD and NH4 +The clearance of-N stably reaches respectively 85.9% and 83.7%, fills out Material surface forms khaki biomembrane, mainly based on protozoan and metazoa, that is, stops adding anion pp The bacterial strain of acid amides (APAM), rhamnolipid and synthesis AI-2 signaling molecules, completes biofilm, and biofilm efficiency improves 45.8%.
Embodiment 2
The present embodiment is the fast filming method with regard to organic filler in high ammonia nitrogen, high salinity chemical wastewater treatment.
Waste water quality：COD concentration 1400mg/L, NH4 +- N concentration 500mg/L, salinity are 1%, pH value 7.5,25 DEG C of water temperature.
Organic filler by weight percentage, is mainly comprised the following ingredients：Polyethylene terephthalate (PET) 80%th, glass powder 1.6%, carbon fiber 1.0%, volcanic ash 1.4%, slag 0.7, porous silica 0.35%, clay 0.55%th, kaolin 0.75%, cob charcoal 0.8%, crushing timber 0.2%, foaming agent 0.15%, balance of Pioloform, polyvinyl acetal (PVF).The foaming agent is AC foaming agents, and the carbon fiber is prepared from by acrylic fiber, the cob charcoal It is to be obtained by the reed and calamus that are carbonized.
The preparation method of organic filler is：1) size is crushed into the chlorination that timber mass concentration is 0.65% for 4mm Sodium solution soaks 2 months, takes out, drying；2) after by the glass powder, clay, kaolin uniformly mixing, in being fitted into mould, 350 DEG C are warming up to the heating rate of 4 DEG C/min, 12.5min is incubated；It is warming up to 850 with the heating rate of 6.5 DEG C/min again DEG C, it is incubated 27.5min；Then 675 DEG C are cooled to the rate of temperature fall of 12.5 DEG C/min, finally naturally cool to normal temperature；3) will The carbon fiber, volcanic ash, slag, porous silica, cob charcoal and step 2) process after glass powder, clay, kaolinite Soil stirring mixing, obtains premix；4) by step 3) gained premix be heated to 265 DEG C, in 100rmin-1Continuously stir bar Under part, the polyethylene terephthalate, Pioloform, polyvinyl acetal are added in the premix, stir 25min, then added Enter the foaming agent, form mixture；5) when the mixture of step 4 is cooled to 77.5 DEG C, the step 1 is added) process Crushing timber afterwards, sends in extruder barrel, by extrusion die extrusion molding, that is, obtains the organic filler.
Its fast filming method is：
(1) by seed sludge and organic filler according to 1:12.5 volume ratio adds reactor and vexed exposure 24h, temperature control At 54 DEG C, then seed sludge is all discharged；
(2) PAMA (APAM) and rhamnolipid are added in waste water, the PAMA (APAM) dosage is 3mg/L, and the dosage of rhamnolipid is 25mg/L, and described rhamnolipid is single rhamnolipid and double The mixed structure of rhamnolipid, technical grade, concentration 25% or so, dosing method is directly added daily with waste water；
(3) interval inoculation synthesizes the strain solution of AI-2 signaling molecules, and the bacterial strain of the synthesis AI-2 signaling molecules is Acinetobacter sp.TW, bacterium solution volume is 2% with reactor volume ratio, and the Acinetobacter sp.TW are spaced 2d It is inoculated with into reactor, reactor brings into operation and be inoculated with after 3d, inoculum density 4g/L, SV30 24%；
(4) 28 DEG C of pH 7.0, water temperature in control system, water inlet volumetric loading is controlled in 0.65kgCOD/ (m3.d)；
(5) treat COD clearances up to 35%, NH4+When the clearance of-N reaches 25%, in 10.5% ratio step up into Water l oad, continuous service 2d stops increasing influent load；
(6) when continuing to run with culture to 12d, COD and NH4 +The clearance of-N stably reaches respectively 82.36% He 75.45%, filler surface forms khaki biomembrane, mainly based on protozoan and metazoa, that is, stops adding the moon The bacterial strain of cationic polyacrylamide (APAM), rhamnolipid and synthesis AI-2 signaling molecules, completes biofilm, and biofilm efficiency improves 46.2%.
Embodiment 3
The present embodiment is the fast filming method with regard to organic filler in high ammonia nitrogen pharmacy wastewater treatment.
Waste water quality：COD concentration 400mg/L, NH4 +- N concentration 130mg/L, pH value 8,35 DEG C of water temperature.
Organic filler by weight percentage, is mainly comprised the following ingredients：Polyethylene terephthalate (PET) 85%th, glass powder 3%, carbon fiber 1.5%, volcanic ash 2.0%, slag 1.0%, porous silica 0.5%, clay 1.0%th, kaolin 1.0%, cob charcoal 1.0%, crushing timber 0.3%, foaming agent 0.2%, balance of Pioloform, polyvinyl acetal (PVF).The foaming agent is AC foaming agents, and the carbon fiber is prepared from by polyacrylonitrile fibre, and the cob charcoal is It is obtained by the reed and calamus that are carbonized.
The preparation method of organic filler is：1) it is size is molten for the sodium chloride that the crushing timber mass concentration of 5mm is 1% Immersion is steeped 3 months, is taken out, drying；2) after by the glass powder, clay, kaolin uniformly mixing, in being fitted into mould, with 5 DEG C/heating rate of min is warming up to 400 DEG C, is incubated 15min；Again 900 DEG C are warming up to the heating rate of 8 DEG C/min, insulation 30min；Then 700 DEG C are cooled to the rate of temperature fall of 15 DEG C/min, finally naturally cool to normal temperature；3) by the carbon fiber, Volcanic ash, slag, porous silica, cob charcoal and step 2) process after glass powder, clay, kaolin stirring mix, Obtain premix；4) by step 3) gained premix be heated to 280 DEG C, in 120rmin-1Under continuous stirring condition, will be described Polyethylene terephthalate, Pioloform, polyvinyl acetal are added in the premix, stir 30min, add the foaming Agent, forms mixture；5) when the mixture of step 4 is cooled to 80 DEG C, add the step 1) process after crushing timber, Send in extruder barrel, by extrusion die extrusion molding, that is, obtain the organic filler.
Its fast filming method is：
(1) by seed sludge and organic filler according to 1:15 volume ratio adds reactor and vexed exposure 24h, temperature control to exist 58 DEG C, then seed sludge is all discharged；
(2) PAMA (APAM) and rhamnolipid are added in waste water, the PAMA (APAM) dosage is 5mg/L, and the dosage of rhamnolipid is 30mg/L, and described rhamnolipid is single rhamnolipid and double The mixed structure of rhamnolipid, technical grade, concentration 25% or so, dosing method is directly added daily with waste water；
(3) interval inoculation synthesizes the strain solution of AI-2 signaling molecules, and the bacterial strain of the synthesis AI-2 signaling molecules is Acinetobacter sp.TW, bacterium solution volume is 3% with reactor volume ratio, and the Acinetobacter sp.TW are spaced 3d It is inoculated with into reactor, reactor brings into operation and be inoculated with after 3d, inoculum density 5g/L, SV30 30%；
(4) 40 DEG C of pH 8.0, water temperature in control system, water inlet volumetric loading is controlled in 1.0kgCOD/ (m3.d)；
(5) treat COD clearances up to 40%, NH4+When the clearance of-N reaches 30%, step up into water in 15% ratio Load, continuous service 3d stops increasing influent load；
(6) when continuing to run with culture to 18d, COD and NH4 +The clearance of-N stably reaches respectively 90% and 93.4%, fills out Material surface forms khaki biomembrane, mainly based on protozoan and metazoa, that is, stops adding anion pp The bacterial strain of acid amides (APAM), rhamnolipid and synthesis AI-2 signaling molecules, completes biofilm, and biofilm efficiency improves 42.9%.
The above, is only presently preferred embodiments of the present invention, is not the restriction for making other forms to the present invention, is appointed What those skilled in the art changed possibly also with the technology contents of the disclosure above or be modified as equivalent variations etc. Effect embodiment.But it is every without departing from technical solution of the present invention content, according to the technical spirit of the present invention to above example institute Any simple modification, equivalent variations and the remodeling made, still falls within the protection domain of technical solution of the present invention.

Claims (5)

1. fast filming methods of a kind of low C/N than organic filler in wastewater treatment, it is characterised in that comprise the steps：
(1) by seed sludge and organic filler according to 1:(10-15) volume ratio adds reactor and vexed exposure 24h, temperature control At 50-58 DEG C, then seed sludge is all discharged；
(2) PAMA (APAM) and rhamnolipid are added in waste water, the PAMA (APAM) dosage is 1-5mg/L, and the dosage of rhamnolipid is 20-30mg/L, and dosing method is direct daily with waste water Add；
(3) strain solution of interval inoculation synthesis AI-2 signaling molecules, bacterium solution volume is 1%-3% with reactor volume ratio, instead Answer device to bring into operation after 2d-3d to be inoculated with, inoculum density 3-5g/L, SV30 18%-30%；
(4) pH 6.0-8.0, water temperature 16-40 DEG C in control system, water inlet volumetric loading is controlled in 0.3-1.0kgCOD/ (m3.d)；
(5) treat that COD clearances reach 30%-40%, NH4+When the clearance of-N reaches 20%-30%, in 6%-15% ratio by Step lifts influent load, and continuous service 2d-3d stops increasing influent load.
(6) continue to run with 3d-18d biofilms to complete.
2. than the fast filming method of organic filler in wastewater treatment, its feature exists a kind of low C/N as claimed in claim 1 In the mixed structure that, the rhamnolipid described in step (2) is single rhamnolipid and double rhamnolipids, technical grade, concentration 25% Left and right.
3. than the fast filming method of organic filler in wastewater treatment, its feature exists a kind of low C/N as claimed in claim 1 In the bacterial strain of the synthesis AI-2 signaling molecules is Acinetobacter sp.TW.
4. than the fast filming method of organic filler in wastewater treatment, its feature exists a kind of low C/N as claimed in claim 3 In, it is preferable that the Acinetobacter sp.TW intervals 2d-3d is inoculated with into reactor.
5. than the fast filming method of organic filler in wastewater treatment, its feature exists a kind of low C/N as claimed in claim 1 In as COD and NH4 +The clearance of-N stably reaches respectively 70% and 60%, and filler surface forms khaki biomembrane, mainly with Based on protozoan and metazoa, that is, stop adding PAMA (APAM), rhamnolipid and synthesis AI-2 The bacterial strain of signaling molecule, completes biofilm.
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